/Engine/Source/Editor/Experimental/EditorInteractiveToolsFramework/Public/EdModeInteractiveToolsContext.h
Configure whether Transform Gizmos created by the ITF (eg CombinedTransformGizmo) should prefer to show in 'Combined' mode. If this is disabled, the Gizmo should respect the active Editor Gizmo setting (eg in the Level Viewport)
void SetForceCombinedGizmoMode ( bool bEnabled )